DESIGN PROCEDURE FOR THE INFLUENCE OF BEND RADII ON LOCAL BUCKLING

摘要

Current codes use the flat width measured from the corner radii in cold formed shapes to compute the buckling strengths of the elements. This can lead to unsafe values in the case of formed angles, and deck sections with small radii, but to conservative values when the radius is large in box and deck sections. Based on FEM analysis of a range of shapes, a design procedure is proposed which predicts more closely the actual capacity of each type of shape.